.h10
  height: 0.2rem
  margin: 0 auto

.h12
  height: 0.24rem
  margin: 0 auto

.h15
  height: 0.3rem
  margin: 0 auto

.h20
  height: 0.4rem
  margin: 0 auto

.h30
  height: 0.6rem
  margin: 0 auto

.h40
  height: 0.8rem
  margin: 0 auto

.h50
  height: 1rem
  margin: 0 auto

.h60
  height: 1.2rem
  margin: 0 auto